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经营范围
发明名称
Improvements in and relating to the mounting of electromagnetic pick-ups in gramophones
摘要
申请公布号
GB366826(A)
申请公布日期
1932.02.11
申请号
GB19310013803
申请日期
1931.05.09
申请人
IDEAL WERKE AKTIENGESELLSCHAFT, FUER DRAHTLOSE TELEPHONIE
发明人
分类号
G11B3/34
主分类号
G11B3/34
代理机构
代理人
主权项
地址
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